Optical disc reading and writing method and writing control information encoding and decoding method based on nano-lithography
A nano-lithography and write control technology, applied in the optical field, can solve problems such as hindering the development of optical disc technology, and achieve the effects of high storage density and storage capacity, fast read and write speed, and strong scalability.
Image
Examples
no. 1 example
[0053] Such as Figure 1A As shown, an optical disc physical storage medium is shown, and its structure includes:
[0054] 1) protective layer 101, which enables the optical disc to withstand frequent use, fingerprints, scratches and dirt, thereby ensuring the storage quality and data security of the optical disc;
[0055] 2) The recording layer 102 is used for writing and recording information. This layer is characterized by stable storage and optical writing. The selected materials include SiO 2 , GaF 2 , MgF 2 , plexiglass, photosensitive materials, etc., but not limited to these;
[0056] 3) The reflective layer 103 is used to increase the spectral reflectance and facilitate the reflection measurement of spectral information. It adopts materials with high reflectivity, mainly including metal materials or multi-layer distributed Bragg reflector (DBR) materials, but not limited to these .
[0057] By using shorter wavelength writing laser beams (semiconductor lasers with...
no. 2 example
[0059] Such as Figure 1B As shown, an optical disc physical storage medium is shown, and its structure includes:
[0060] 1) protective layer 201, which enables the optical disc to withstand frequent use, fingerprints, scratches and dirt, thereby ensuring the storage quality and data security of the optical disc;
[0061] 2) Absorption modulation layer 202, the material of this layer has absorption modulation characteristics, and its absorption spectrum has the following characteristics: Figure 1C According to the features shown, the thickness of the layer is less than 500nm, and the material of the absorption modulation layer includes diarylethene, fulginic anhydride, and azide materials, but is not limited to these;
[0062] 3) The recording layer 203 is used for writing and recording information. This layer is characterized by stable storage and optical writing. The selected materials include SiO 2 , GaF 2 , MgF 2 , plexiglass, photosensitive materials, etc., but not ...
no. 3 example
[0068] refer to Figure 1D , the resolution of the spectrum determines the number of bits of coded information. In order to increase the resolution of reflection spectrum measurement, this embodiment is based on the first embodiment and the second embodiment, by between the recording layer 102 and the reflection layer 103 or One or more intermediate layers are added between the recording layer 203 and the reflective layer 204, thereby providing an optical disk physical storage medium. In detail, its structure includes:
[0069] 1) The recording layer 303 is used to write and record information. This layer is characterized by stable storage and optical writing. The selected materials include SiO 2 , GaF 2 , MgF 2 , plexiglass, photosensitive materials, etc., but not limited to these;
[0070] 2) The middle layer 304 is a material with a high refractive index, the refractive index is greater than that of the material of the recording layer 303, and the spectral absorptivity i...
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Abstract
Description
Claims
Application Information
- IPC
- G11B7/09
- CPC
- G11B7/0908
- Inventors
- 王中阳; 张力